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Poster communications

Paradoxes in the Galaxy balance, and origin of the cosmic rays

Abstract : Various outstanding paradoxes in the mechanical balance of the Galaxy are highlighted. There outmost relevance must needs find a coherent and likely explanation. We propose a unique and synthetic interpretation, including a cosmological theory of the origin of the observed cosmic rays, especially at the highest energies known. It involves matter-antimatter annihilation in the median plane of the Milky Way. Accordingly, we discuss the structure and equilibrium of the Galaxy, seen as made of two parallel disks of matter versus antimatter dominance, opposed through the repulsion of an annihilation gas, settled in the equator disk. The admitted suppression of antimatter in the Universe, after the "big-bang", is questioned. Various tests performed, indeed, tend to confirm our theory; in particular, the now classical power-law energy behaviour of the incident flux of energetic cosmic rays is easily derived, quite with expected exponents of -2.5 and -3 (main dependence, including the first knee). Ultra-high energies, further, are easily attainable, with no necessary restriction of the "GZK" kind, for instance. Beyond 10^20 eV, rather, a new break is still made possible.
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Contributor : Dominique Girod <>
Submitted on : Tuesday, September 11, 2007 - 2:23:32 PM
Last modification on : Friday, April 10, 2020 - 5:08:56 PM


  • HAL Id : in2p3-00171066, version 1


M. Laloum. Paradoxes in the Galaxy balance, and origin of the cosmic rays. Semaine de l'Astrophysique Française (SF2A 2007), Jul 2007, Grenoble, France. Société Française d'Astronomie et d'Astrophysique, à paraitre, 2007. ⟨in2p3-00171066⟩



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